Improvement in revolving- harrow and cultivator combined



s. D. CARPENTER. Harrow and Cultivator. v No. 85,282. Patented Dec. 29, 1868.

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the loose slotted bearing-pin. v

s; D. CART-ENTER, or, MADISON, WISCONSIN.

Letters P tent No. 85,282, dated December 29, 1868 IMPROVEMENT IN REVOLVING HARROW AND CULTIVA'I'OR Cb-IVCBINED.

The Scheduler-aimed to in these Letters Patent and making part of the same.

To all whom it may concern Be it known that'I, S. D. CARPENTER, of Madison, in the county of Dane, and State of Wisconsin, have invented certain ne and useful Improvements in Revolving Harrow and Cultivator Combined; and I do hereby declare that the following is a full, clear, and exact description thereof, reference being bad to the accompanying drawings, making part of this specification, 'and to the letters of reference marked thereon, like letters indicating like parts wherever they occur.

To enable others skilled in the art to construct and use my invention, I will proceed to describe it.

The nature of my invention consists in the peculiar construction of a revolving harrow, so arranged that it may operate as a cultivator, with or Without revolving.

In the draWings- Figure 1 is a perspective view of the device as a har- Figure 2, a vertical section of the wrist or journal and the loose slotted bearing-pin.

I construct a cast-iron head-block, A, similar in shape to that represented in the drawing, with an opening or dead eye at B. for the purpose of connecting any proper device to propel the harrow forward.

D-D represent bosses or hollow projections on the top of 'the head-block, at the right and left-hand cor ners, for the purpose of forming a suflicient bearing for Beneath the rear of the block, and equidistant between the projections D, I make flanges on the sides and point, projecting downward some two inches, for the purpose of holding firmly the forward end of the centre bar E, and at the point indicated by f, I insert a tooth similar to an ordinary barrow-tooth, and also another like tooth near the rear end,, as at g. These will keep the centre bar off the ground, and agitate the earth, in the centre line, between the-converging points of the revolving teeth.

I cast the wrist h in connection with the tubular band 'i and the projection k, so as to be driven firmly on the forward end of the revolving bars F, and thus not only protect their ends from checking, but fasten the said wrist and band thereon firmly, by means of a bolt, as at j.

G represents the slotted bearing-pin, the wrist h passing freely through the same, with a washer and pin on the opposite side, as seen at l, figs. 1 and '2. This will allow the bars F. to revolve-atany propel angle they may be placed in from the centre bar, and.- the slot or elongated opening in the loose bearing-pin will allow the rear end of the revolving bars to be raised or depressed, to suitthe surface of the ground,

without cramping the bearing, thus forming a universal joint of the wrist. I also use a pin and washer to secure the slotted bearing-pin in its place.

These revolving bars I make either round-or octagonal, and about four inches in diameter. I use square or round iron for teeth, making them sutficiently long to project on each side some five or six inches,.reducing them to a sharp point at each end. These I insert at any desired distance apart, spirating the rows, as seen in fig. 1.

The tooth at the front end should be placed as near said end as practicable, and should not come in contact with the centre bar, when the harrow is contracted in Width, as hereinafter set forth.

The bent iron bars H and Ia're for the purpose of supporting the rear ends of the bars F, and for the purpose of extending or contracting the width of the barrow. For the purpose of accomplishing this result, 1 punch a hole in the outer ends of the circular iron bars, which serve as bearings for the journal-pin, as in fig. 1. I use a lag-screw for the purpose.

Near the inner ends of the bent bars I punch a series of holes, in each bar equidistant, which allow the inner ends of the bent bars to rest onthe pin in therear of the centre bar E at P. It therefore follows that in order to contract or extend the width of the harrow the pin I may be withdrawn, and readjusted in either of the holes, care being taken to match corresponding holes, so as to have the rear ends of both the revolving bars '11 equidistant from the rear end of the centre bar E.

The above description will enable any adept, when desired, to make and use the device as a revolving harrow. I

When desired to be. used as a cultivator, the rear ends of the revolving bars E should be brought sufliciently near together to pass between rows of corn, and thenthe bars Will not revolve, but their projecting teeth will agitate the ground, removing weeds, 860.

"Having thus fully described my invention, What I claim, is-

1. The revolving bars F, in connection with the uni-.

versal joint at G and It, as and substantially for thepurpose set forth. 2. The combination of the block A, the revolving bars F, the stationary bar E, the adjustable curved bars H and I, the bearing-pin h, and the slotted wrist bearing G, as and for the purposes herein set forth. S. D. CARPENTER. Witnesses:

, P. T.-DoneE, L. HAILER. 

